Venzke, M.-L.; Frenzel, K.; Partovi-Azar, P.; Hönicke, P.: Experimental determination of the sodium K-shell atomic fundamental parameters for X-ray spectroscopy. Spectrochimica Acta B 233 (2025), p. 107303/1-6
10.1016/j.sab.2025.107303
Abstract:
Reliable fundamental parameters are essential for accurate X-ray fluorescence analysis of sodium. This work presents updated experimental values with reliable uncertainties for sodium K-shell fundamental parameters such as: fluorescence yield, photoionization cross sections, and Auger yields. Using a physically calibrated setup and a thin NaCl layer on a silicon nitride membrane, a holistic determination approach was applied to reduce uncertainties. The new values represent a significant improvement on the ones widely used in databases. All data are available via Zenodo to support precise sodium quantification in scientific and industrial applications.